For the classic Office 2003 feel with modern file support, (with its "Classic" toolbar mode enabled) is the best legal alternative. It reads and writes DOC, XLS, and PPT flawlessly and runs from USB without admin rights.
Because it's lightweight (compared to modern versions), it launches nearly instantly on modern hardware. What’s Included in the 2003 Suite? microsoft office 2003 portable
Contrary to popular belief, Microsoft never officially released a "Portable Edition." Instead, these were community-created versions of the Microsoft Office 2003 For the classic Office 2003 feel with modern
But for the nostalgic tinkerer or the legacy system caretaker who truly needs it—and who respects the legal boundaries—Office 2003 Portable is a small, fast, and enduring testament to an era when office software fit entirely on a single CD-ROM and ran happily on 256 MB of RAM. What’s Included in the 2003 Suite